Big Block Mopar - Assembled
Note: Requires offset shaft rockers 746-PCE261.1186
- Intake Valve: 2.200"
- Exhaust Valve: 1.810"
- Max Lift: .650"
- Coil Bind: .725"
- Intake Install: 135 lbs @ 1.9
- Exhaust Install: 135 lbs @ 1.9
- Closed Sear Pressure: 135 lbs
- Open Seat Pressure: 280 lbs
Engine Performance Upgrade
Speedmaster Complete Cylinder Head Kits are available in a variety of configurations. Aluminum and cast iron construction allows you to choose the best material for race and street applications. Using bronze valve guides, hardened seats, along with advanced port and valve seat design, Speedmaster cylinder heads offer you a performance upgrade at an affordable price.
Do these require offset rocker arms
Will the bear cast heads ( not cnc ) capable of making 500 to 550 hp with 10.51 compression with a 600 lift cam and a 850 carb
Is it possible to get 11 to 1 compression using Wesco flat top pistons by Milling the heads
What is the compression using flat top Wesco Pistons
What would the compression ratio be with flat top pistons with these heads
What is the max horsepower these heads will make
Do these heads clear a stock distributor and do they have stock accessory mounting holes?
The add shows heads with valves and springs and the main description states "complete", but the bulleted details say "bare." Which is it, complete or bare? Do these heads fit std 440 intake and exhaust flanges?
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.